Optical reflector.



F. M. WALTS. OPTICAL REFLECTOR.

APPLICATION FI-LED MAR. 16, 1910 l Patented Sept! 30, 1913.

a SHEETS-SHEET 2.

I s i i r I i I Hi I HHHHHIIHH I IlllllIlllllllllllllllllillllllllmlllllI ;l 4 I I Illlllll IIIIIIIIllllllllllllllllllllillllllli M attoz 7 F.M. WALTS. OPTICAL REFLECTOR. APPLICATION FILED MAR.16, 1910.

1 "74 145 v Patentd.Sept.30,1913.

, a SHEETS-SHEET s.

\ I I IllIlHI!IlIHIIHIHIIHHHHIIH lllllllllllllllfllllll"l I OFFICE jFRANK MH'WALTS, or NEW YORK, Y.

To elltwliom it may concern:

citizen of the United States, borough of Manhattan, city of New York,

in the county oi New y invention relates to. e-yeglasses 91H?'bodyingreflectors-for viewing obiects-whioh areout of thedirectline ofvision, and one the-Wiewing of objects substantiall ot'gthe objectsfoilmy invention is the better 15' v side,

vlewing of such ob .ects,'pai'ticularl-y at the without the necessity.ofi shifting the eyes away from natural,-. ;posi1t;ion.

Another of: the objects-of myinvention is 111. any direction, asdetermined hi the.- posltiorr and angled the reflector, wit out appearito 1 look: inthe direction of the object viewe I Another andveryimportant; object'of invention is to render thereflector and; its.

support inconspicuous.

Another object of my invention is to enable-the employmentofi areflectorfor each eye without-one. of.the reflectors interfering y xwith-the-useof the other.

Another object of 'my invention is to: oh

1 tain-al'arge field of vision in: the reflector.

In the pre Other more particular; objects of my in:- .vention willhereinafter appear.

My invention includesmeans-for support?- 35 1 such a wa that -it,;will:be practically coning-the reflector at the rear of the glass in cealed:by t e glassand its usual fittings the rear side of theglass-inproximity to the frameor clip; atthe inneredgeof the glass, but forcertain purposesflthe reflector isbodily adjustable-across therear faceof the glass away fromitsnormal position.

My invention also. includes means by Y which the angle of the reflectoris automatically varied concurrently .with its bodil adjustment, so thatthe object: viewed wlllbe presented tethe eye in the sameadvantageousrelation as before e My invention in the best ormostdesirable formiin which it has been embodied in- Specificationof'lietters Patent. Appliatibnflledlfarchfi, 1910. Serial No. 549,591.

I p icludes a series of 11: known that I, FRANK .W4r.rs,- a residing" atthe,

York and State of .New Yorlehave invented certain new and usefulImprovements in Opticat Reflectors,

. Y of which'theflfollowing is a specification, reii erenceheing had.therein to the. aeemnpany- 7 mg drawings, which I rear elevation,

right of Fig. 1. Fig.

erred embodiment of. my inrvention, thereflector is normally locatedather that, while one-of the: reflectors is inuse, the otherreflector-will not be in the line of vision of the} other eye.

' My Invention also includes various combinations of parts and severaldetails of construction, as will appear from the following particular.description of the several embodiments-thereof illustrated in theaccompanyshall now describe and shall thereafter point out my inventionFigure-:1 is arear elevation of, a =pair of eyeglasses equipped with oneembodiment. of

{my invention. Fig. 2 is a top view of what PatentedSept.30,1913.

is shown in Fig. 1. 1 Fig. 3 is an enlarged j with parts omitted andportlons broken away,

of what appears at the 4 is a top view, partly in central horizontalsection, ofwhat is shown in'Fig; 3': .1 Fig. 5 is a vertical section ona fiurther' enlarged scale-on the line 5-5 o F i 3 as viewed from theright. Fig. 6 is a getail side elevation of a spring catch forming apart of the reflector support, drawn to the same scale as Fig. 5. Fig. 7is a view similar to Fig. 4, showing a slightly modified reflectorsupport, the reflector being omitted. Fig. 8 -is-a top view of a1nodified construction. Fig. 9 is a rear elevation of what isgshown inFig. 8,.but with the reflectorjshown in broken lines adjusted to thesame position and shown in full lines adj usted to a different position.Fig. 10 is a top view oi: a construction slightly modified from whatisshown in-Fig. 8. Fig. 11 isa rear elevationof another modifiedconstruction. Fig. 12--is a top-view of what is shown in Figl-l. Fig. 13is a rear elevation of a simplified modification. Fig. 14 is a top view,partly in section, of the con St-I'IlOtiOl'lrShOWIl in- Fig. 13. Fig.15'is a topview of 'a further simplified modification. Fig. 16 jsa topview of the simplest modification of the invention. Fig. 17 is a detailface view of the reflector employed in the constructions illustrated inFigs. lfto 10,

inclusive. Fig.18 is a similar view of the reflector employed in theconstructions illustrated in Figs. 11 to 15, inclusive. Fig. 19 is anenlarged transverse section of a reflector glass, in which the thicknessand taper are exaggerated or. accentuated for clearnessof illustration.Fig. 20 is an enlarged rear view of a spectacle glass having indicatedthereon in dotted lines some of the positions of adjustment possible forthe reflector in the construction illustrated in Figs. 1 to 6,inclusive.

In the embodiment of the invention illustrated in Figs. 1 to 6,inclusive, of'the drawings, circular-mirrors 1 are arranged at the rearsides of the glasses 2 of an' ordinary pair of eyeglasses, as shown.Thermirro'rs 1 are adjustably supported, and in Figs. 1, 2, 3 and t areshown as adjusted to an extended position near the center of the glasses2 so as to better illustrate the supporting means, and'although theywould usually, by

reason of the better concealment afforded, be

employed in the retracted position indicated in dottedlines in Figs. 1and 4, they may be adjusted to substantially any position withinthelocations indicated by dotted lines in Fig. 20; The reflector 1 isintended primarily for viewing objects at the side and substantially atright angles to the ordinary direct line of vision, and the reflector 1is so mounted as to automatically change its angle t'othe glass 2 andconsequently to the eye as its bodily position is'shifted from extendedto retracted position, or vice versa, as indicated in dotted lines inFig. 4:, so as to still present the same objects or the same field ofvision to the eye as before without any alteration in position of thehead of the wearer of the glasses, tion of the reflected view by reasonof the restricted field between the glass 2 and the face of the wearer.The reflectors '1 are most inconspicuous when adjusted-to the retractedposition indicated in dotted lines in Figs. 1 and 4, but in certaincases, when in- 4, being then substantially in the direct line ofvision. The other positions of adjustment, such, for example, as areindicated in Fig. 20 and in dotted lines in Fig. 3, are employed when itis desired to look upward to a point above the glasses or downward to apoint below the glasses or to some intermediatepoint. 'It is preferablethat the re- -fiectors 1 and their immediate adjuncts should be readilydetachable from the eyeglasses,-leaving substantially nofindication thatsuch reflectors have been attached thereto.

and avoiding obstruc- The reflector 1 is a mir rdr-com-posed of thinsilveredf'glass and for the-purpose of causing a single image tobepresented to the eye by the light rays reflected from the two surfacesofthe-gla'ss, the mirror ,maybea weak prism, as is more clearly-shown inFig. 19; or, if the glass is extremely-thin, one

thirty-second of anineh' orless, thenthe. 'faces should be parallel. Ifind it convenient to select pieces of glass having the properreflective actionto effect this result, or preferably optical glass maybe accurately ground for the; p 1 1rp se .I It should be noted, becauseofthe more direct or more acute angle of incidence of the light rays,

that the location --of the rcflectorinward rather than outward from theeye diminishes the objectionable double reflection tobe provided for asabove noted. Also it is to be noted that the location of the'refle'ctoraway from the outer edge of the eyeglass highly important efi'ect ofgiving'a larger field of vision for a reflectorofa given size, becauseof the more advantageous angle at 'which the reflector is employed. Itis understood, however, that it is within the scope of the presentinvent-ion to employ any kind of reflector, such as a normal, magnifyingor diminishing reflector, a metallic reflector, a rectifying prism or aplurality-ofand nearer to theinner' edge thereofhas the reflectors whichmay eflect rectification. of

the image; also, ifdesired, lensesmay be employed in conjunction withthe reflectors to give a telescopic eflect andarra nged for adjustmentto individual sight. -However, the

simple form of reflector illustrated in thedrawings it is believed willanswer most practical requirements and gives an inexpensive and simpleeonstruction, conveniently used and readily adjusted.

To, prevent the throwing into bright rays which would interferewith-distinct vision, such as might result from reflection at the edgesof the reflector, the silvering around the margin is removed and ablackened border at .the back substituted, as indicated in Figsyil and17 To harmonize the appearance of the back of the reflector with that ofthe frame of the glasses and to the eye of i render it in other respectsless conspicuous, a

gold plate or disk 3, having a dull or Roman finish, is secured to theback of the reflector. Opposite notches 4 are provided in the edges 0the reflector for the reception of holding or supporting means and topermit the edge of the reflector toqcome in close proximity to theeyeglass 2 "without interference of the supporting means.

The means shown for 'adjustably supporting the reflector 1 on the glass2 will now be described. The supporting means illustrated in thedrawings areshown as formed for the most part of wire, this materialhaving been found well adapted for purpose, inexpensive, easily" workedand providing a simple and strong construction. A holder or clip 6 ofwire has bent or hooked ends engaging in the notches it. at the edges ofthe reflector 1, and at the back of the reflector {the holder has :astraight portion lying in contact with i-the back of the disk 3, thedisk 3 protecting the backing of the glas's 21mm abrasion, and theholder 6 has another portion in-'. *tertwisted with a wire standard 7thein tel-twisted portions. also lyingin contact with the back of thedisk 3. The standard 7 has a straight portion extending alongside of thestraightportion of the holder 6,

this straight portion of the standard 7 being bent outwardly'to form aportion extending away from the back of the reflector. and then bentagain at its end to form apivot pin substantially parallel with the'backof the reflector and lying transverse to and substantially at rightangles to the holder v6. The pivotal end of the standard 7 is pivotedin.- a coil 8 formed on the adjacent end of a supportingarm 9. In theposition, of adjustment'shewn-in full lines in the drawings, thereflector l is shown as located just inwardly fro'm'the center of theglass 2 substantially in the direct line of vision and is disposed at anangle of substantially to the glass '2 and to the eye, and, hence, wouldpresent tothe eye obects substantially directly at the side of theobserver. For purpose-of at all times maintaining this angular positionof the reflector when desired,- and also tor the purpose, when, desired,ofva rying Ptrom' this angular poslt on so as to present to" the *eyeobjects more at the rear or more in front, .even to. theextent ofreflecting vbeams of light transmitted through the glass 2, as with thereflector in the position indicated in dotted lines in the modifiedconstruction shown in Fig. .14, the joint formed by the pivotal end ofthe standard 7 and the coil 8 is' sufliciently rigid or stifl so that itwill at allltimes retain its position of 'adustment, excepting when intentionally compelled'to move andwill not be disturbed by themanipulation necessary to effect-other adjustments. Foryiewin'g objectsthrough the glass 2, and reflected from the reflector 1,-to the bestadvantage,

the reflector l'should be adjusted to a position substantially at rightangles to the glass 2 near to the inner edge of the glass 2 andpreferably the' reflector should be tilted upwardly, by reason of theusually downwardly inclined position of the head of the wearer. Thesupporting arm 9 extends from the .'coil 8 substantially parallel to theback of the reflector 1' and substantially parallel to the holding clip6, and is turned at itsother end to form a pivot pin 10, which ena c il11 formeduatuthe adjacent end fromit he Boil 11 substantially Eparall'elwith 4 glass 2 and has-an end portion 113 -b'ent' toward the glass 2' ata slightly obtuse angle to the median portion "(of the arm and enteringa .coilll fwimed' a median portion of a wire-supporting base 15. Theaxes of the pivots formed at the respective coils .11 and 14 aredisposed at a slight angle to one another substantially in the sameplane. :The result of this inclination of the axes of the ,pivots at theopposite ends of the swinging intermediate arm 12is toautomaticallyadjust the angle of the reflector 1 when the reflector is bodilyadjusted from exte ded to retracted position, or vice versa', as shown'in -iull and indicated in dottdlines in Fig. 4, By rea-- son of thisangular adjustment automaticalily taking place concurrentlywith thebodily adjustment, the same -objectvvill be presented to the eyeregardless-of the adjusted position of the reflector l-and avoidingannoying reflections from the back of the glass 2, and also obviatingany ob- .Struction of the'vision by the glass 2 or by the head'of thewearer. The .riormalt-posi- :tion of the reflector 1 is. the retractedposition indicated in dotted. lines in Figs. 1 and l 4, as the reflectoris then'most inconspicuonspbut, as' shown --in =th'e drawings andhereinbe'fore noted, the reflector may, with; in certain limits, beadjusted away fro 7 its normal position.

The base 15 is secured to the frame of the eyeglasses at .the inneredgeiof the glass 2, and is detachably fixed in position to permit itsreadyremoval together with all of the pants carried thereby, includingthe reflec- .tor -1. 'The support 15 has substantially parallel,:portions or branches extending from respective ends of the coil 14, the

branch nearest to the glass 2 having its end portion 16 bentsubstantially at a right angle and inserted into a longitudinal holeprovided axially in a screw 17 forming a part of-theframe l8 andsecuring the frame 18 to the glass 2. The other branch of the base 15 isprovided, as shown most clearly in Fig. 4;, with two substantially rightangular bends to provide a foot 19 adapted to be received beneath aspring catch 20 of sheet metal held in place by the head of the screw.17. The reflector 1 and all its adjuncts, exceptingalone the catch 20,are readily re-v movable merely by slipping the foot 19 from beneath'thespring catch 20 and then withdrawing the end 16 from the longitudinalhole in the screw 17 This enables the eyeglasses to'be used without thereflectors 1 and without any readily observable traces 7 at its pivotalend being in like manner these points,

scope of adjustment of the reflector l both retained in the coil 8 ofthe arm 9. It is to be noted that, in adjusting the reflector 1,

adjusting movement may take place either at the coil 11 or at the coil14: or at both thereby permitting a large rotatively and bodily.

Both of the reflectors 1 should not be at the same time directly infront of the eyes, i and, even in their most extended positions of ofthe other reflector, therebyenablingadjustment shown in full lines inFigs. -1,

2, 3 and 4, would for most eyes be located inwardly from the direct lineof vision, and by reason of this feature of construction a veryimportantadvantage is secured. By

reason of that physiological relation or -manner of muscular control ofthe eyes which causes them always to move automatically in relativeparallelism, when one eye-is directed toward one of the reflectors,

the other eye will then-be directed away from and'to a point beyond theouter edge eitherone'of the reflectors to be used to view anobje'ctwithout the presentation tov the other eye of other objects atthe other side of the observer." This desirable efiect is mostpronounced when the two-reflectors 1 both occupy their normal positionsnear to 'theinner. margin 'of'the' glass 2, shown in broken lines in-Figs. ,1 'and4, and is least pronounced, thoughv to most eyes. stillpres-. out to afpractical extent, when both re-- flectors are in theirpositions of maximumextensionshown inflfull lines in Figs. 1, V2,

-- sand-a. '-However, for best results, when it is desire'dyto useone ofthe .reflectors in fullyfextended position, maybe "adjusted to a moreorposition, Y used without regard to or disturbancefromthe other. Theabove 'described'highlyfidethe. other. reflector less retracted andeither reflector may thus be sirable effect is present whenever bothreflectors 1 are located 'at any of the locations inward from the centerof the glass,-' as indi cated in Fig. 20, but it is p referable, forbest results, as above noted, t at at least .one of the reflectorsshould not occupy its o'sition of extreme extension shown'in" full "lies-in Figs; 1, 2,3 .and 4, and indicated-in broken lines atthe rightin'iFig. 20.;

'Ihe modified"constructionillustrated in Fig. 7 is substantially thesame as that illus trated in Figs. 1 to, 6, inclusive, excepting that abase 21 is provided which is not readily detachable. In thisconstruction,

the securing screw 22 has a longitudinal ob-' lique hole trom end to endthereof, through which passes one branch of the wire forming the base21, this branch of the wire then being turned and wound 'part way aroundthe base of the frame 18, engaging in such' winding with the end of theother branch of the wire forming the base 21 in the manner clearlyshown, thereby securely attaching the'base 21'to the frame-18 Theconstruction in other respects than noted above may be thesame as thatdescribedin reference to Figs. 1 to, 6, inclusive.

The modified construction illustrated in Figs. 8 and 9 differs chieflyfrom that described in reference to Figs. 1 to 6, inclusive, inproviding a series of three pivoted intermediate arms 23, 24 and 25correspondingto the single intermediate arm 12, thereby giv- I ing agreater range of adjustment of the reflector 1*., Also there is afurther variation of construction in the mounting of the reflectorl inthat a supporting arm 26 for the reflector 1 is provided, which, while--pivoted to the arm 25 in a manner substantially similar to that in whichthe'arm' 9 is pivoted to the arm 12 in the first described construction,at its other end is united by a universal joint to the reflector 1, suchuni- 'versal joint being made up of a short link 27 pivoted at one of'its ends in a coil. 28.

and disposed substantially perpendinlar to the glass 2*. 7 At its otherend the-1i k 27 is pivoted in a-coil29 disposed substa tially' I atright-angles to the coil 28 and f rrn'ed upon and substantially at rightangles to a wire clip or holder 30 engaging the reflector 1substantiallyinthe same manner as it is engaged by the clip or holder 6in the first described construction. The pivot formed by the coil29'with the link 27 performs a substantially similar function to that ofthe whereas the 'pivot formedjby the coil 28' and link27'is an;additional pivot, the counterpartofwhlch is not found in thefirst'describedconstruction. 'Thereflector 1 may rotate about thepivotat' the coil 28v as an axis without. substantially r pa'rtaking ofbodily f swinging movement or other bodily traveling movement. Itistof-benoted in thisconstruction that the'axes of alternate pivots of thefour pivots of the connecting arms 23, 24 and 25- are arrangedsubstantially parallel one'to another while the axes pivot formed by thecoil 8. and standard 7,-

of adjacent pivots are inclined to one an-j other or'dlsposedat an'angleto one another,

ositions of adjustment, lying sub -the'axes of all of the pivots,however, in one Y 1 voi the stantial y a plane transverse tothe glass100 formed at the adjacent end of the'armi 26- 25 being :1- nor-4.145 y2, the axes :of the joints'on pivots fiormed at :the outermost ends ofthe arms23 and disposed substantially perpendicular to t 6 lens glass'2, as is clearly evident in'Fi-g. 8. This'zarrangement ofalternate'lyinclined pivotsproduces a similar result fautomatically adjusting theangle of the reflecto-r '1?- as is produced the inclined pivots atopposite ends ot the intermediate arm 12in the construction described inreference to Figs. 1 to 6, inclusive.- The extend-eel positionof thereflector 1 is shown in Fig. 8 and the retracted or. normal posisoinconspicuous as not to be readily observable to' a third partynwhen theglasses are worn-r .This construction shown in Figs. 8 and- 9 isthe'most desirable and practicable form-.- in which the invention hasbeen worked out." This. construction afiords a maximum .o fadjustability within the mostadvantageous ranges and also, when'desired, may be rendered quite inconspicuous by adjustment to ,aretracted position', -such as shown in- Fig-9. In other respects thanabove noted, the construction shown in Figs.- 8. and. 9 issubstantially-the same as that shown in. Figs; '1 to 6, inclusive. if: 7A The greater range'of adjustment of'the reflector 1 -in theconstruction {illustratedin Figs. 8. and-9 over that-of the reflector-1.

in the eons'tructionillustrated infFigs. 1 to 6, inclusive, includes aposition central. of

= '1?- f frourgthefeenter-of the-glass--2-,.a's' shown in -I Fig-.'18 Iand indicated by broken lines in'Fig. 9. Itarjtiiuld not be advisable; 1however; to

the 159829 inthe direct lineof vision and' in its most eitendedposition-the reflector a position slightly outward posit-fret: centralof-the glassya-nd directly-in i, Fig; 10' presents substantially-italicsame; -'Tconstruetion"'as that just de scribed. ;in refers"hereinbefdr'e explainedi the tattoo of instill: one of the reflectorsawayfi'om the central positionr. :The adjustment. outward fromthe willbe. 'efiic'aciOusy-but an inward;- adjus'tnientgives a so morepronounced result and. is in other respects usually; 'ia'r moredesirable "Also-= the inward adjustmeat will give thelarg'est possible.field of I pivoted together at their median point, the V arm 36-beingprovided with a coil 38 through vision of-which the reflect-uniscapable.

eneeto Figs. 8 and aydifierin therefromonly in, the employment of a'series 9i; five intermediate arms 31, 32, 33, 34' and 35, instead of thethree intermediate arms 23, 24 and 25. This construction afiords a widerrange of adjustment in that the reflector 1' may be adjusted to anextended position in proximity to the outer edge of the glass 2'?asshown, while still admitting of. the

other, adjustments hereinbefore described.-

In fact, in this construction the reflector "may be bodily adjusted toany position within the boundaries. of the glass 2. However, it wouldseldombe necessary or de- 'si'rable to employ a'reflec'tor at theextreme position of, extension shown in Fig. 10. Also in this extendedposition the angle of the reflector is necessarily such that thereflector is disposed more nearly :edgewise to the available field andlikewise to the eye, causing a correspondingly smaller field of visionto be presented to the eye-than in the more inward positions'of thereflector shown in the preceding figures and of which the constructionshown in Fig. 10 also ad units,- as hereinbefore noted. The mostdesir'able field for the employment of the rehector, for convenientservice without eye strain, for inconspicuou'sness-for securing the mostextended field-of vision and for the most sharply defined image,- iswithin the.

inner half of the glass, as indicated in Fig. 2.0. and capable of beingcovered by the constructionshown in Figs. 1 to 6, inclusive, and alsowith somewhat greater facility by the construction shown in Figs. 8 and9.

The construction illustrated at Fig. 10, is the most complete embodimentof the invention, although not necessarily .the preferred construction.In -many instances some of the simpler constructions might be preferablefor'part iculer purposes; and as hereinbefore mentioned, theconstruction- .illust-rated at Figs. 8 and 9 would probably be that mostgenerallyflused for a variety of purposes. However,- because of the factthat the construction illustrated at Fig. 10 contains the greatestnumber of features; the-claims herein are direetedmore particu larlytothis embodiment of the invention. It is to'be-understood that; inconstructions fmt-special-uses the features not desired may be omitted;t "i I the modification illustrated in. Figs: '11--and- 1 2,- thesupportfor. the reflector meludes lazy tongs levers. This-construction issubstantially thc'sameas that illustratedat Fig; 1 0,- excepting' thatthe lazy tongslevers-aresubstituted, for the first four or the arms31,'.32,-'33 and 34 in the series-cf five-pivoted arms. The lazy tongscomprise two-crossed: long or levers 36 land 37 whichpas'ses a rightangularly bent median portion on the other arm 37. Theariii 36' is andat its outer end with acoil 49 and the arm '37 is correspondinglyprovlded with end coils 41'and'42.- Thecoils'39 and'41' of the arms 36and 37, respectively-,'- are 'pivotally; engaged by. the.right-angularly bent end portions of-inner short arms-42. I 'and43;respectively. The-short arms 42" -and43 are providedattheir inner ends;

respectively, with coils 44 and 45, both o bent pivotal endf'5'2 of a.swinging arm-{53 "corresponding substantially in relative lo'ca tion andfunction to--the swingin :arms'12 512. a d 25 g -"8 a and (FigJlO)! Thelazy tongs arrangearms48 and 49 respectively. The outer short arms 48.and149" are provided'at their outer endsg respectivelm]. with thecoils50 and '51,

which are both pivotally n ageajgby the I ment affords the advantageover a long-series of jointed arms in that it is more readily. andconveniently manipulated to obtain the 3 various adjustmentsand, ontheother hand,

' it presents the-disadvantaged being some:

' darker shading in the drawings.

maybe adjusted to an extremeposition .in

, and for better illustration of the supportin .What', more conspicuous,Because of this fact of greater conspicuousness, it is preferable 'to;"employ the. lazy tongs arrangement:

upon-a darl -glass' 54,"as indicated ythe The .range'of ad'ustmentof' helazy tongs arrangement is substantially =thesame as that-of theconstruction-shown in Fig. 10

and, as in. that-construction, the reflector 55- proximity to the outeredge of the glass 54,

means is shownin the drawings as adjusted to'this' extreme outerposition. Itis to be noted thatthe reflector 55 may be folded orretracted substantially to the inner position shown at Fig. 9. Thedarkglass 54 pro-- 'sents an advantage-over the light or ordi-' naryclear glass shown in Figs. 1 to 10, inclusive, in that it provides adark background for the image seen in the reflector 55. The reflector 55is ova-l, such as is more clearly shown at Fig. 18, instead of circular,as .in the hereinbefore described constructions. An oval reflector givesa larger field of vision and may be advantageously "ernployedparticularlygupon dark glasses.

The use of a circular or of an oval reflector is'largely a matter (iftaste. -However, an oval reflector is more'desirable in that a reflectorof larger area may be employed, because of the fact thatthe .width ofthereflector is necessarily limited by reason .of the limited space,while its length may be scribed. A wire '-supportin passeslongitudinally through extended as found desirable. The width be- I thesame, a circuIar reflector isto some extent preferable uponllghtor clearglasses, because less conspicuous;

-- The modification illustratedin Figs. 13

and 14is a somewhat simpler embodiment of the invention than hasheretofore been destandard 56 I I a 'jsc'rew 57 from the. rear tothefront'of theiglass' 58 and. this front portion of the wire of the shownin'the drawings, and an oval reflector (-55 is employed substantiallythe same as' the reflector-.55 (Figsjll, an'd'12) and shown suppo rtf'56is extended and tied "securely about the post of the frame-59, asclearly in face-view at Fig; 18. The reflector 55 is held by a holderorclip provided :at the b'ackfof the reflector with ascircular turnforming airing 60. The ring .160." passes through-and forms a pivotalconnection with a coil- (ii-formed at -te endof the support 56,'which atthe rear ofthe' glass 58 extends downwardly and outwardly. from thescrew '57; of. thefra-me- 59 adjacent to the inner edge of the glass 58.The reflector 55.is shown -"as.lo ":a-ted'inward and somewhat downwardfrom the'oenter of the glass 58, this position being convenient for theeye, the reflector and-its support being concealed by the darkness-ofthe dark glass 58. The ring 60.and coil 61 are combined so astoformauni- 'versal joint permittingthe reflector .55 to; berotatively'adjusted about the axis of the coil 61, which issubstantially perpendicular to the glass 58, and also permitting theangular adjustment of the reflector asaindicated in dotted lines in Fig.,14, by reason coil v6]., the support 56then yielding slightly away fromits. original position, as also. indioated in Fig. 14;, by reason of thecontact of the edge of the reflector 55 with the rear of'the slipping.of the ring 60 through the I surface of the glass58. In the position ofthe reflector shown in-full lines in Figs. 13 and 14:," objects directlyatthe side of the observerwill be. presented'to the eye by thereflector. In the position of the reflector indicated by dotted lines inFig. 14, objects I more at the frontwould be observed by light passingthrough the glass 58 and then reflected to-the eye from the reflector55*.

Fig. 15 illustrates a yet simpler modification of the invention.- Inthis construction a reflector 55 is carried by a holding clip 62intertwisted for a portion ofits length with a short, bent, swinging arm63, provid'ed at its inner end witha coil 64. pivoted upon a wire stud65, which in turn is fixed at one end in a small disk 66 of glass,celluloid, or other transparent or translucent materlal, so as to beinconspicuous from the front of the dark glass-67. The disk,,66., issecured tothe' glass 67 by anadhesive and may be located at any pointdesired on the rear face thereof, being shown in Fig. as locatedsubstantially at the center of the glass 67. The reflector 55" may befreely rotatively adjusted about the stud 65, but-,ca'nnot bemovedbodily withoutrotation to different locations upon the rear face of theglass 67, unless the disk 66 be loosened from the glass 67 andre-aflixed in another location' I The very simplest modified-embodimentof the invention illustrated in Fig. 16 remains to be explained. In thisconstruction a reflector 68, which may be a silvered mirror such asshown inface view of Fig. 18,

is beveled at one edge, as shown in Fig. 16,

and issecured at such bevelededge byadhesive directly to the eyeglass 69adjacent to'its inner edge and in close proximity. to the frame 70,which-1s shown as secured to the glass 69 at its inner edge in the usualmanner. The reflector 68 is. shown as arranged at'the' proper angle forviewing objects di-'.

rectly atthe side of theobserverfi By reason of its location near to theinner edgeof the glass 69 and in close proximitytothe frame 70, thereflector 68 is quite inconspic'uous and not readily observable. Also',

by reason' of its location, the reflector '68 presents to the eye alarger field of vision and permits amore natural position of the eye tan would a reflector fixed at the outer margin or outer edge oftheeyegla'ss. By

' reason of the inconspicuous location and nature of the reflector 68,the glass 69 does not-needto be dark to assist in concealing thereflector 68, but may be clear glass as indicated in the drawings by.the lighter color. Although this is a very' simple construction, itis'also a very practical construction. There is absent only the featureof adju'stabil-ity, which enables the presenting to the eye-of objectsat a plurality of positions cor-responding to a single position of thehead of the observer and which also permits the reflector at certaintimes. to be brought directly into the line of vision when the eye islooking straight. ahead. -The location of the reflector in proximity tothe frame at the inner edge of the eye 'lass is, taken altogether, byfar the 'most desirable position. In several of the different construetions illustrated, the reflector is adjustable away from this its normalposition, but in f other of the modifications, in --which dark glassesare employed, the reflector is shown as permanently orfixedly locatedaway,

from. the inner edge of the glass and more nearly straight ahead in thedirect line of vision, butalways at an appreciable distance inward fromthe outer edge of'the glass, as is also true of all of-the constructionswhen the reflector is in no'rmal position, as hereinbefore moreparticularly expla'in'ed.-- n is .to be noted that the reflector 68could be 2. In combination with 'aflixed at a diiferen-t point, on theglass 69, and particularly this form of reflector could beadvantageously employed more nearly to the center of a dark glass.

In all of the constructions the reflectors may be duplicated at oppositesides, one being provided for each eye. When there flector 68' isthus'duplicated near-to the inner edges of, the glasses, because of thefact that the reflectors are located inward from the direct line'ofvision, the use of one 'of the reflectors will not in any manner heciable distance inward from the outer edge .of the eyeglass so as topresentto the eye a V large field of vision and to permit a naturalposition of the eye ;,as wellasfor further concealment of the reflectorand supported at an angle to the. eyeglass suitable for view ing in thereflector objects outof the direct. I

line of vision.

flector supported at the rear thereof adjacent to the inner marginthereof. for sub stantially concealing'the reflector from the publicandarranged at an inclination to the eyeglass providing for viewingobjectsout of the direct line of vision whilepresenting to the eye a largefield of vision.

3.1 In combination with an eyeglass provided at its inner margin with aframe, a

an eyeglass, a re .1

reflector supported at the rear. of the eyeglass'in proximity to theframe at the inner margin of the eyeglass and disposed'at an inclination:to the eyeglass so that objects out ofthe direct line of vision maybe'seen in the reflector and for affording conceab mentto the reflectorby reason of its proximity'to the frame andlocation at the rear 'of theeyeglass, the positioning of the reflector in proximity. to the innermargin of the eyeglass providing an angleof the re flector which willpresent to the eye a field of vision of maximum extent.

4. In combination with an eyeglass, a are-- flector at the rear of theeyeglass, and a 7 support for the reflector including means permittingadjustment of the reflector bodily across the surface of the eyeglass todifferent positions within the outer boundaries of the eyeglass. I

5. In combination withan eyeglass, a relvl'." f-vid'ed at its) inner'margin with a ;:frame, a V freflector'ca'rriedby theframeat the rearofthe: eyeglass, and calfsupport for the reflector including meanspermitting adjustment of flecto r at the rearof; the eyeglass, a

support for: the reflector v including means i permit-ting adjustment ftherejflectorbodily to substantially all. points "within" the :map ginalboundaries-o'f' .the -eyeglass.'-

6, .In combination with an eyeglass, a re flector atthe rear of theeyeglass adjacent to the'inner edge thereof, and a supportfor thereflector including means permittihgadjustment of, j the reflector awayI from and toward-suchi'nneredge' ,j-

"' In eombhzition,with an eyeglass pro the. reflector relatively; to thesupport-f 8.- The combination with an eyeglass, of:

alreflector' at the rear side thereof, andan'i extensible support torthereflector." 1:9. The .combinatioirwith an eyeglass pro yided withfa-frame," ofareflector ati-the rear side of Lthe eyeglas's, and anextensiblesupport "for the reflector :mounted on the frame/j p i 10.The-combination v1th an eyeglass, of

alreflecto'r adjustably mountedftheieon,'andi iv-m'eansfor'automatically adj'ustingftlie angle {11-1 The co hbination with" a framecarriedv bythe .head of the user andgan optical gre- -flectorforfpresenting objects to, the'geye, of

' of the reflector concurrently with its bodily adjustment? I meansfonsupporting the reflector,.jon the .frame including anarm pivoted attwapoints,'the-=axes of the pivots being disposed the same plane."

at an angleto one another substantially in 1 IQLThe-cmnbination with aneyeglass of a reflector at the rear side of the eyeglass,

and a s'u'pport for the reflector,'such sup- ,port including an armpivoted at each, end,

'the axes of the two pivots being inclined to one another substantiallyin the same plane and-the axis of one ofthe pivots'being sub-.

-' s'tantially perpendicular. to theglass.

13; The combination with an eyeglass and a reflector, of a series ofjointed arms sol'elysupporting the reflector on the eyeglass-andproviding for reotilinear bodily movement of-the reflecton. l i

i l. The combination of an eyeglass provided with a frame,- areflectorat the rear ,of the glass, and a series of jointed arms connecting thereflector to the frame.

, 15. The combination with an eyeglass and a reflector, of'a series ofpivoted arms supporting the reflector on the glass, in. one of thepositions'of adjustment the axes of alternate pivots being substantiallyparallel one to another in'a plane substantially perpendicular to theglass.

16. The combination with an eyeglass and a reflector at the rear sidethereof, of a sup-.

' 321. The combination i vitli -a p glasses, of a reflector at the rear--of each port. I for the including lfor across the. glass ".17; The-cobmat on with ant a}refleetor at'th'e rearisidefthereo {and a support-Iorthe reflector including {means for permitting "the-adjustment'of.'the';reflector bndily acrossith'e glass, angularly' withre spect tothe glass, and rotat'ivel'yon apivot whoseaxis-issubstantially'perpendiular to:

the glass. w I 18.,.The combinationwith aneyeglass-pro: *videdvwithgaframehaving a securing screw, 7

passing through the glass, of a reflectonfat" therear side ofthe"'glass,'and asu'pport for. the reflector including apart supportedby' -1 f the s'crew; V 1* 19; The combination with an eyeglasspro-"yidedwitha frame having a securing screw :pas'sing'through the glass,the screw being provided with a hole longitudinally thereof,

.Qf-EL reflector at. the; rear [side of the glass, v and a support forthe reflector, such support 1 g including part'entering' the hole inthe. .{s'crew,. f. ZOK-The combination with an eyeglass pro vided withaframe having a securing screw detachable.

glass, andaisupport. for atl'east fone-of the reflectors including meansrendering such reflector movableto a positioninward from the centerofthe glass.

22 .v The combination- With a of glasses, of reflectors at the rear'qofeach glass,

and supports for the. reflectorsincluding means permittingmovementof'the reflectors tovpositions-inwa-rd from'the-centers of theglasses. to The 'comblnation wltha f r'am 'e carried by the head of theuser. and. an opticalre- .fiector for presenting objects to the cye,.ofa support for-the reflector secured to'-"the f frame solelyinward'lyfrolnthe eye,

'24.. In combinationwith :aneyeglass pro-z vided with a frame, of a'reflector atthe f, v rear of the eyeglass, and a support forthe;

reflector mounted on the frame at the inner; margin of the eyeglass.

25. In combinatlon with an eyeglass of reflector supported at the rearthereof at ans angle suitable for presenting objects-to thev 0ftheeyeglass 'so as thereby to provide a eye Qut of the direct line'ofvision and 10- In testimony whereof lheve aflixed my cated at least inpart within the inner. half signature in presence of two witnesses.FRANK M. WALTS.

' I large field-0f vision together with substan- Witnesses:

5 tialt concealment of the reflector from the HERBERT H. GIBBS,

public. I I I 'W ASHLEY KELLY.

